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StreamTokenizer separators...

Posted on 2000-05-16
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Last Modified: 2012-06-27
I would like to know how to set to which separators the StreamTokenizer will "react". It is easy to set separatorst for StringTokenizer but it doesn't work with StreamTokenizer in that way.
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Question by:ssdjgru1
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Laminamia063099 earned 400 total points
ID: 2814404
If you want to use simple delimiters, the following call can be used:
StreamTokenizer st = new StreamTokenizer(new
                                         BufferedInputStream(is,4000));
st.whiteSpace('|','|');

That would specify that the | character is the delimiter.  Any other delimiter can be added as such.

Drop a comment if you need mor help :)

Laminamia :)
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by:ssdjgru1
ID: 2814815
hmm...there is no whiteSpace method in java.io.StreamTokenizer class.
There is whitespaceChars(int,int),void method  but I don't know how to use it.
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by:Laminamia063099
ID: 2815414
Oops.  Sorry that's the one I meant.  the whitespaceChars(int, int) method allows you to specify a range of characters that are considered to be whitespace (whitespace characters that you specify are your tokens.)

The following code:

            StreamTokenizer st = new StreamTokenizer(new BufferedReader(new FileReader("B.java")));
            st.whitespaceChars('|','|');

creates a StreamTokenizer that considers the characters from '|' to '|' (i.e. just '|') to be the only tokens in the StreamTokenizer.  That is how you set a token.

Use resetSyntax to reset the Tokenizer so that everything is considered "ordinary" (i.e. no tokens) and then set your own tokens using the whitespaceChars.

It does say that it takes int's, but by passing it characters, you are passing it the UNICODE value for those characters.

Good luck, drop a note if I'm still confusing :)

Laminamia :)
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